divalent element,dyad是什么意思

用法例句

The possibilities of redox reactions between chromate (Cr(Ⅵ)) and ferrous iron (Fe(Ⅱ)) in alkaline system were investigated in the laboratory and analyzed from point view of thermodynamics with a purpose to control chromium leaching from incineration fly ashes.

为了控制焚烧飞灰中铬的浸出,将FeSO4加入焚烧飞灰水系统中和Cr(Ⅵ)的碱性水溶液中,试验二价铁(Fe(Ⅱ))对Cr(Ⅵ)的还原效果,并检验了Cr(Ⅵ)的还原产物的稳定性。

In this paper,palladium(Ⅱ)-catalyzed allylic rearrangement reaction was described.

近年来二价钯催化反应已成为研究热点,其催化的烯丙位重排反应则研究较少。

In this paper,Palladium(Ⅱ)－catalyzed allylic rearrangement reaction is described.

近来,二价钯催化反应以其高选择性、环境友好以及原子经济性等诸多优点成为研究热点。